stilwell



(N o Model.) 3 Sheets-Sheet 1.

o. B. STILWELL..

PAPER. BAG MACHINERY.

110.413.634.. y l Patented 001;. z2, 1ss9.

(No Model.) 3 Sheets-Sheet 2.

C. B. STILWELL. PAPER BAG MACHINERY.

.Patentd Oct. 22, 1889. A

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WITNEsIzsEs.` (l Y fuif/Enma 3 Sheetsf-Sheet'. C.' B. STILWELL. PAPERBAG MAGHINERY.

` Patent-ed 0013.22, 1889.

s l l il.; Il n w|TNEssEs= UNITED STATES PATENT "OFFICEe CHARLES B;STILWELL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE UNION PAPER BAGMACHINE COMPANY, OF SAME PLACE.

. PAPER-BAG 4MAcl-HNERY.

SPECIFICATION forming part of Letters Patent No. 413,634, dated October22, 1889.

Application filed July 5, 1889. SerialNo. 316,548. (No model.)

' `ful PapenBag Machinery, of which the following is a true and' exactdescription, reference being had to the accompanying drawings, whichform a part of this specification.

My invention relates to the construction of that part of a paper-bagmachine in which a web of paper is folded into a bellows-sided tubepreparatory to b'ein g cut into bag-blanks and my object is to provideimproved devices whereby the alignment of the edges of the tube may bemade more perfect and all injurious strains on the paper avoided.

The novel features of my invention will be best understood after adescription of the drawings, in which they are illustrated, and theywill be clearly pointed out in the claims.

Reference is now had to the drawings which illustrate my invention, andin which- Figure lis a side elevation of those portionsA of abag-machine t which lmy improvements are applied; Fig.V 2, a plan Viewshowing my new devices; Fig. 3, a side elevation of the same; Fig. 4., acentrallongitudinal section thereof, and Fig. a section through thefolded tube.

Referring first to Fig. l, which, as aforesaid, shows those portions ofa bag-machine to Vwhich my improvements are applicable, but in which Ihave not shown Vthe novel combinations of mechanism which I desire toclaim in this 'patent because of the small scale of the drawings, l isar roll of paper; 2, the paste-trough; 3, the paste-roll; Lland 5,vguiderolls; 6, the standard to which the formerplates E E2 are secured;'7, guide-wheels, and 8 guide-fingers, all of which are of the usualwell-known kind. The aligning-wheels D and presser-rolls F F' `are alsodevices in common v 5o front of the presser-rolls F F', while the lowerformer E2 extends forward to and beyond said rolls, as is shown at E'.

D D are aligning-wheels situated just in.

front of the end of former-plate E and journaled in arms D', which areadjust-ably secured to the arms D3 by screws D2, and these arms D3 arepivoted at D4 to the frame A. The wheels D pass between the folded sidesof the tube Z, Fig. 5, and their edges rest against the folds z2 z2 andinsure their being properly aligned, and they can be swung outward onscrews D2 or upward on pivots D4, so as to remove them from the path ofthe paper when it is desirable.

In front of wheels D a bridge Bis secured across the former and tubepath, and to this bridge are pivoted arms C2, upon which doubleiangedaligning-wheels C are journaled in such position that their edges willrest against the top folds z3 z2 of the tube, while their anges extendinward above and below said folds. These wheels C are adjusted and heldin proper position by set-screws B4, which work in blocks B2, saidblocks being pivoted to bridge B at b2, so that they and the screws canbe thrown upward and theP pivoted supporting-links C2 thrown back out ofthe path of the tube whenever it is necessary.

C3 is a lug on link C2, against which the end of screw B4 rests.

- e' is a plate securedbeneath bridge B, so as to extend out over edgez' and beneath edge .e of the paper, a ridge e being formed on saidplate to rest against edge e' inside of the line of paste, so as to holdthe edge out of contact with the lower edge z while the folds are beingaligned by the wheels D and C.

I-I is a finger depending from bridge B and serving to keep the top edgez in approximately correct line while the wheels D and C are operatingupon it.

C4 is a finger lying normally, as shown in Fig. 2, and serving toprevent the top edge of the paper from rising up as it passes beneaththe presser-rolls F F', between which rolls an extension E of the lowerformer extends.

Thev operation of my improved mechanism has'been sutiiciently explainedin describing its parts, and I need only say that by its means I amenabled to produce a tucked tube more accurately folded than hasheretofore generally been the case, and that by reason ot' its describedconstruction the aligningwheels are easily thrown back out of the pathof the paper when a new web is adjusted or it is necessary t0 overhaulone in process of formation.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a paper-bag machine, the doubleiianged aligning-wheels C, incombination with pivoted supports, adjusting-screws B4, and pivotedscrew-blocks B2, substantially as and for the purpose specified.

2. In apaper-bag machine, the combination, with former-plates E E2, ofaligning-wheels D, arranged to engage the inwardly-tucked sides ofatube, double-flanged aligning-wheels C, arranged to rest against theupper edges of the tube with their anges embracing the same, a pivotedsupport for the double-flanged aligning-wheels, an adj usting-screw B4,and a pivoted support B2 for said screw, substatially as and for thepurpose specified.

3. In a paper-bag machine, the combination, with former-plates E E2, ofaligningwheels D, arranged to engage the inward1ytucked sides of a tube,double-flanged aligning-wheels C, arranged to rest against the upperedges of the tube with their ilanges embracing the same, a pivotedsupport for the double-flanged aligning-wheels, an adj nstingscrew B4, apivoted support B2 for said screw, a plate e', having a ridge c to keepthe pasted edge of the paper out of contact with the lower ply while thetube is being aligned by the wheels D C, and presser-rolls F F',situated in advance of the aligning-wheels, substantially as and for thepurpose specified.

4. In a paper-bag machine, the combination, with former-plates E E2, ofaligningwheels D, arranged to engage the inwardlytucked sides of a tube,double-flanged aligning-wheels C, arranged to rest against the upperedges of the tube with their {ianges embracing the same, a pivotedsupport for the double-anged aligning-wheels, an adjustingscrew B4, apivoted support B2 for said screw, a plate e', having aridge c to keepthe pasted edge of the paper out of contact with the lower ply while thetube is being aligned by the wheels D C, a finger H, arranged to holdthe upper lip of the tube in approximately correct position while it ispassing over ridge e, and presser-rolls F F', situated in advance of thealigning-wheels, substantially as and for the purpose specified.

5. In a paper-bag machine, aligning-rolls D, adapted to pass between thefolded sides of the tube, in combination with supportingarms D and armsD2, screws D2, securing arms D and D3 together, and pivots D4, securingarms D3 to the frame, substantially as and for the purpose specified.

CHARLES B. STIIVELL.

"itncssesz LEWIS R. DICK, FRANCIS T. CHAMBERS.

